Data Sourcing, Connectors, APIs (JSON, GraphQL)#
There are many ways to obtain data for analysis. Some common methods include collecting data through surveys or experiments, purchasing data from a data provider, or accessing publicly available data from sources such as government agencies or non-profit organizations. It is important to carefully consider the source of the data and ensure that it is reliable and appropriate for the intended analysis. Additionally, it may be necessary to clean and preprocess the data before it can be used for analysis.
ETL stands for Extract, Transform, and Load. It is a process in data warehousing that involves extracting data from various sources, transforming it into a format that is suitable for analysis, and then loading it into a data warehouse or other data storage system. ETL is often used to integrate data from multiple sources and make it available for analysis and reporting. This allows businesses to gain insights and make informed decisions based on their data.
ELT stands for Extract, Load, and Transform. It is a variation of the ETL process in data warehousing that involves extracting data from various sources, loading it into a data warehouse or other data storage system, and then transforming it into a format that is suitable for analysis. The main difference between ELT and ETL is the order in which the data is processed. In ELT, the data is loaded into the destination system before it is transformed, whereas in ETL, the data is transformed before it is loaded. ELT allows for more flexibility and scalability in data processing, as the data can be transformed using the processing power of the destination system.
APIs, or application programming interfaces, are a set of protocols and tools for building software applications. An API specifies how software components should interact with each other, and provides a way for developers to access and use the functionality of other applications or services. For example, an API might allow a developer to access a database or a web-based service and use its data or functionality in their own application. APIs can be public, allowing any developer to access them, or private, allowing access only to specific users or developers. They are often used to enable integration and interoperability between different systems and applications.